A University of Texas law graduate, for example, had an average debt of $105,254 but three years after graduation earned an average $147,444, or 1.4 times the debt incurred. That is the same ratio that a Yale Law School graduate has, according to SoFi data. On average, graduates of Yale Law School, which is ranked the No. 1 law school nationally, have $123,793 in debt and earn a salary of $171,779, according to the SoFi report called “Return on Education (ROED) Law School Rankings.”

The Ivy League school offers financial aid packages, and about 60 percent of the law school’s students qualify for need-based scholarship grants, according to SoFi’s findings.

Texas graduates have the advantage of low tuition costs, said Amanda Wood, SoFi’s director of business operations and strategy. The tuition is $34,000 a year, the second-lowest in-state tuition among the country’s top 20 ranked schools, according to the study. The Texas school has a national ranking of No. 15.

Another Texas school, the University of Houston, had a similar salary-to-debt ratio, Ms. Wood noted. The average graduate from that school three years out had $100,160 in debt and earned an average $136,370.

Over all, typical law student loan debt is estimated to be in the low to mid six digits for private law school students, and lower for those who attended public institutions. However, no one official figure covers all law schools.