I will always remember interpreting for a colleague who was telling a student and his mother that he offered tutoring after school everyday.
“But, Mr. ____, you teach the same way then that I didn’t understand during class,” replied the student.
Here’s an excerpt:
The same Evidence In Brief shared another study that found minimal positive impacts on increasing class time for all students.
I’m adding this info to The Best Resources On The Idea Of Extending The School Day.