To find out how many students stay for afterschool programs, we need to sum the number of students in the "Afterschool Programs" column for all grades.
From the table:
- 10th grade: 10 students
- 11th grade: 6 students
- 12th grade: 7 students
Now let's sum these numbers:
10 (10th) + 6 (11th) + 7 (12th) = 23
Therefore, the total number of students who stay for afterschool programs is 23.