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More than 400 members of the senior class at Oak Lawn Community High School are scheduled to participate in their graduation ceremony Wednesday night, but 48 of their classmates will not be joining them after school officials discovered they took part in a scam.

They are accused of falsifying documentation of their required community service hours needed to graduate.

The school’s principal say 47 students claimed to have helped at the Stony Creek Golf Course in Oak Lawn but they never did the work they claimed.

A 48th student completed the required 24 service hours over four years but he allegedly forged the signature of the general manager of Stony Creek on forms of 45 other students.

That student is accused of charging his classmates $10 to $20 for each forged signature.

He was suspended from school for five days and banned from taking part in Wednesday’s graduation ceremony.

The other students are also banned from graduating and will not receive their diplomas until they provide proof of having met the graduation requirements.