Teams keep secret their NFL draft boards, but The Post shares its report card.

So, which teams handled the unique scouting and technological challenges caused by coronavirus stay-at-home restrictions better than the rest? Here are first-look grades for all 32 teams, with a curve instituted for the first-, second- and third-round picks and an emphasis on quality over quantity.

1) Dallas Cowboys

Grade: A+

Key Picks: CeeDee Lamb (WR, Oklahoma), Trevon Diggs (CB, Alabama), Neville Gallimore (DT, Oklahoma), CB Reggie Robinson (CB, Tulsa), Tyler Biadasz (C, Wisconsin)

Analysis: Cowboys apparently trust their Southwest area scout. Lamb was the steal of the first round and the Diggs-Robinson combination softens the blow of losing free agent Byron Jones.

2) Baltimore Ravens

Grade: A

Key Picks: Patrick Queen (LB, LSU), J.K. Dobbins (RB, Ohio State), Justin Madubuike (DT, Texas A&M), WR Devin Duvernay (WR, Texas), Malik Harrison (LB, Ohio State)

Analysis: Run the ball, stop the run. Just keep solidifying a timeless winning identity. Queen is the prototypical Raven, but sleeper Duvernay had 106 catches last season.

3) Cincinnati Bengals

Grade: A

Key Picks: Joe Burrow (QB, LSU), Tee Higgins (WR, Clemson), Logan Wilson (ILB, Wyoming), Akeem Davis-Gaither (OLB, Appalachian State)

Analysis: Each of those players was the first pick in a round. It’s difficult to screw up a draft that way. Native son Burrow brings badly needed franchise-changing swagger.

4) Denver Broncos

Grade: A

Key Picks: Jerry Jeudy (WR, Alabama), K.J. Hamler (WR, Penn State), Michael Ojemudia (CB, Iowa), Lloyd Cushenberry (C, LSU)

Analysis: Best collection of offensive skill talent in the NFL? Adding this class to Melvin Gordon, Courtland Sutton, Noah Fant and Phillip Lindsay makes a strong case. Drew Lock is a lucky quarterback.

5) Minnesota Vikings

Grade: A

Key Picks: Justin Jefferson (WR, LSU), Jeff Gladney (CB, TCU), Ezra Cleveland (OT, Boise State), Cameron Dantzler (CB, Mississippi State)

Analysis: Seven-round draft record of 17 total picks after two trades. No way Jefferson should’ve slipped to No. 22. Gladney was a first-rounder and Cleveland had first-round potential.

6) Arizona Cardinals

Grade: A-

Key Picks: Isaiah Simmons (LB, Clemson), Josh Jones (OT, Houston), Leki Fotu (DT, Utah)

Analysis: Top-five talent (Simmons) fell to them at No. 8 and Jones — who some mocked as a first-rounder — was a third-round steal. No wonder coach Kliff Kingsbury always looked so relaxed at home.

7) Cleveland Browns

Grade: A-

Key Picks: Jedrick Wills Jr. (OT, Alabama), Grant Delpit (S, LSU), Jordan Elliott (DT, Missouri)

Analysis: Wills and top free agent Jack Conklin as offensive line bookends will improve Baker Mayfield. Second-rounder Delpit was a top-10 talent and is a steal if he cuts down missed tackles.

8) Indianapolis Colts

Grade: A-

Key Picks: Michael Pittman (WR, USC), Jonathan Taylor (RB, Wisconsin), Julian Blackmon (S, Utah), Jacob Eason (QB, Washington)

Analysis: Traded their first-rounder for DeForest Buckner then added the catch-everything Pittman and workhorse Taylor. Will big-armed Eason stay focused enough to be the quarterback of the future?

9) Jacksonville Jaguars

Grade: A-

Key Picks: C.J. Henderson (CB, Florida), K’Lavon Chaisson (OLB, LSU), Laviska Shenault (WR, Colorado), Ben Bartch (OT, St. John’s-Minn.)

Analysis: Tear-down-and-rebuild of an elite defense starts with the two first-rounders. Shenault is a creative play-caller’s dream and Bartch is a high-ceiling developmental project.

10) Tennessee Titans

Grade: A-

Key Picks: Isaiah Wilson (OT, Georgia), Kristian Fulton (CB, LSU) Darrynton Evans (RB, Appalachian State)

Analysis: They married need and value every time. Evans and Derrick Henry are the NFL’s new thunder-and-lightning tandem. Wilson and Fulton replace free agents Jack Conklin and Logan Ryan.

11) Carolina Panthers

Grade: B+

Key Picks: Derrick Brown (DT, Auburn), Yetur Gross-Matos (DE, Penn State), Jeremy Chinn (S, Southern Illinois), Troy Pride (CB, Notre Dame)

Analysis: After picking Brown over the versatile Isaiah Simmons, the Panthers doubled back with Simmons Light (Chinn). And Gross-Matos was the draft’s second-best defensive end.

12) Detroit Lions

Grade: B+

Key Picks: Jeff Okudah (CB, Ohio State), D’Andre Swift (RB, Georgia), Julian Okwara (OLB, Notre Dame)

Analysis: Okudah profiles as a future All-Pro and Swift was the No. 1 running back on several boards. Teaming Okwara with older brother Romeo is smart for growth.

13) Miami Dolphins

Grade: B+

Key Picks: Tua Tagovailoa (QB, Alabama), Austin Jackson (OT, USC), Noah Igbinoghene (CB, Auburn), Raekwon Davis (DL, Alabama)

Analysis: Hoping for higher marks with three first-rounders, but their first five picks all are somewhat boom-or-bust. Trading for veteran running back Matt Breida was smart.

14) New York Jets

Grade: B+

Key Picks: Mekhi Becton (OT, Louisville), Denzel Mims (WR, Baylor), Ashtyn Davis (CB/S, California), QB James Morgan (QB, FIU)

Analysis: Becton over surer thing Tristan Wirfs in an unexpected choice of tackles was a swing for the fences. Trading down and still landing Mims was shrewd. GM Joe Douglas had a sneaky strong Day 3.

• Jets’ NFL Draft tracker: Live round-by-round picks and analysis

15) Los Angeles Chargers

Grade: B

Key Picks: Justin Herbert (QB, Oregon), Kenneth Murray (ILB, Oklahoma), Joshua Kelley (RB, UCLA)

Analysis: Herbert is the new face of a franchise trying to build a fan base. The Chargers gave up their second- and third-rounders to move up for Murray at No. 23. Worth it.

16) New York Giants

Grade: B

Key Picks: Andrew Thomas (OT, Georgia), Xavier McKinney (S, Alabama), Matt Peart (OT, Connecticut), Darnay Holmes (CB, UCLA)

Analysis: Started out on fire with their No. 1 offensive tackle — a recurring theme — and a major second-round steal in immediate starter McKinney, but the Giants endured a 63-pick wait then didn’t address holes at pass rusher or center soon enough.

• Giants’ NFL Draft tracker: Live round-by-round picks and analysis

17) Tampa Bay Buccaneers

Grade: B

Key Picks: Tristan Wirfs (OT, Iowa), Antoine Winfield Jr. (S, Minnesota), Ke’Shawn Vaughn (RB, Vanderbilt)

Analysis: Wirfs went nearly as high as No. 4 and fell to the fourth tackle, at No. 13. Winfield’s seven interceptions last season was tied for third in the NCAA — and ball skills translate to the NFL.

18) San Francisco 49ers

Grade: B

Key Picks: Javon Kinlaw (DT, South Carolina), Brandon Aiyuk (WR, Arizona State)

Analysis: Similar to the Chiefs, the 49ers don’t have many holes. Their two first-rounders have high-impact rookie potential. Trading two picks for veteran left tackle Trent Williams is worth a bump. No other picks until the fifth.

19) Kansas City Chiefs

Grade: B-

Key Picks: Clyde Edwards-Helaire (RB, LSU), William Gay Jr. (LB, Mississippi State), Lucas Niang (OT, TCU)

Analysis: Super Bowl champions just picked off highly graded players, with no major needs. First-round running back is a surprise for coach Andy Reid, though Edwards-Helaire is a receiving threat.

20) New Orleans Saints

Grade: B-

Key Picks: Cesar Ruiz (C, Michigan), Zack Baun (LB, Wisconsin), Adam Trautman (TE, Dayton)

Analysis: No picks in the final four rounds and no offseason program for the Saints, who saw Baun and Trautman inexplicably slipping and traded up for quality over quantity.

21) Buffalo Bills

Grade: C+

Key Picks: A.J. Epenesa (DE, Iowa), Zack Moss (RB, Utah), Gabriel Davis (WR, UCF), Jake Fromm (QB, Georgia)

Analysis: No first-round pick … technically. But second-rounder Epenesa was a top-15 prospect before his poor scouting combine overshadowed his Big Ten film. Power back Moss is an injury risk.

22) New England Patriots

Grade: C+

Key Picks: Kyle Dugger (S, Lenoir-Rhyne), Josh Uche (OLB, Michigan), Devin Asiasi (TE, UCLA)

Analysis: Traded out of the first round, as usual, and doubled up on outside linebacker and tight end with five second- and third-round picks. Strange. No quarterback is even stranger.

23) Philadelphia Eagles

Grade: C+

Key Picks: Jalen Reagor (WR, TCU), Jalen Hurts (QB, Oklahoma), Davion Taylor (LB, Colorado)

Analysis: Not the best draft for one of the usual winners. Reagor over Justin Jefferson was surprising — even if he can be DeSean Jackson 2.0 — and Hurts as a backup/threat to Carson Wentz is either arrogant or overthought.

24) Washington Redskins

Grade: C+

Key Picks: Chase Young (DE, Ohio State), Antonio Gibson (RB/WR Memphis), Saahdiq Charles (OT, LSU)

Analysis: Young is the best overall player in the draft, but no second-rounder and a reach for Gibson (14 touchdowns on 77 touches in college) early in the third leaves a lot to be desired.

25) Seattle Seahawks

Grade: C+

Key Picks: Jordyn Brooks (LB, Texas Tech), Darrell Taylor (OLB, Tennessee), Damien Lewis (OG, LSU)

Analysis: Seahawks are always good for some surprises. More hits than misses on the track record, but Brooks and, even more so, Taylor both look like reaches. Decrease in number of early trades was felt here.

26) Green Bay Packers

Grade: C

Key Picks: Jordan Love (QB, Utah State), A.J. Dillon (RB, Boston College), Josiah Deguara (TE, Cincinnati)

Analysis: Strange philosophy for a team on the cusp of a Super Bowl to draft backups with their first three picks. Love is in an uncomfortable spot but has future star potential if he learns while in Aaron Rodgers’ shadow.

27) Los Angeles Rams

Grade: C

Key Picks: Cam Akers (RB, Florida State), Van Jefferson (WR, Florida), Terrell Lewis (OLB, Alabama)

Analysis: Rams haven’t picked in the first round since 2016 and won’t (barring a trade) until 2022. Sean McVay loves his offensive toys. Jefferson and Lewis both have injury history.

28) Chicago Bears

Grade: C-

Key Picks: Cole Kmet (TE, Notre Dame), Jaylon Johnson (CB, Utah), Kindle Vildor (CB, Georgia Southern)

Analysis: Just two top-150 picks made eight picks apart in the second round. The Bears now have 10 tight ends on the roster. Ten! There were better cornerbacks than Johnson available, too.

29) Pittsburgh Steelers

Grade: C-

Key Picks: Chase Claypool (WR, Notre Dame), Alex Highsmith (DE, Charlotte), Anthony McFarland (RB, Maryland)

Analysis: No first-rounder, but the Steelers know how to evaluate, steal and develop receivers — and Claypool’s athleticism in a tight end body is intriguing. Big bet placed on small-school Highsmith.

30) Atlanta Falcons

Grade: D+

Key Picks: A.J. Terrell (CB, Clemson), Marlon Davidson (DE, Auburn), Matt Hennessey (C, Temple)

Analysis: It’s easy to spot panic. And when the Falcons couldn’t trade up for Jeff Okudah or C.J. Henderson, they panicked into Terrell at No. 16. Hennessey could’ve gone 40 picks sooner, so good value.

31) Houston Texans

Grade: D

Key Picks: Ross Blacklock (DT, TCU), Jonathan Greenard (OLB, Florida), Isaiah Coulter (WR, Rhode Island)

Analysis: Bill O’Brien’s nightmare offseason continued. A trade with the Lions fell through in the third round. Blacklock is an immediate starter, but he was slow to address needs at cornerback, tight end and offensive line.

32) Las Vegas Raiders

Grade: D

Key Picks: Henry Ruggs III (WR, Alabama), Damon Arnette (CB, Ohio State), Lynn Bowden (WR, Kentucky), John Simpson (G, Clemson)

Analysis: Three of the first four picks were receivers and the fourth (Arnette) was the first round’s biggest reach. Fourth-rounder Simpson is the best value pick.