[Angelino97]

Nothing new.

From 2021: Teacher who hung BLM flag outside class offered extra credit for activism, DCPS investigation finds.

I'm sure they began doing this in the 1960s.

[Bookshelf]

Nothing new: During the Spring Semester 1953 at the University of California there were scores of students gathering and protesting the Rosenburg sentences and protesting their innocence. They were not, however, given extra credit for attending.