The "back-to-basics" movement came about because many adults thought that students did not have enough freedom in the classroom.
many adults thought that students did not have enough freedom in the classroom.

many adults became concerned that students were not spending enough time on important subjects like reading and writing.
many adults became concerned that students were not spending enough time on important subjects like reading and writing.

many adults thought that schools were not placing enough emphasis on the arts and athletics
many adults thought that schools were not placing enough emphasis on the arts and athletics

schools were becoming too bureaucratic
schools were becoming too bureaucratic