Do help!!

Sub calculate_average_SAT_score_for_school_type() first_row =3 last_row = Range("A1000").End(xIUp).Row For current_row = last_row To first_row Step -3 If Cells(current_row, 2).Value = "PRIVATE" Or Cells(current_row, 2).Value = "PUBLIC" Then sum_sat_score = sum_sat_score + Cells(current_row, 4).Value End If Next End Sub 3,366 2,515 1,485 849 845 Sub calculate_average_SAT_score_for_school_type() first_row =3 last_row = Range("A1000").End(xIUp).Row For current_row = last_row To first_row Step -3 If Cells(current_row, 2).Value = "PRIVATE" Or Cells(current_row, 2).Value = "PUBLIC" Then sum_sat_score = sum_sat_score + Cells(current_row, 4).Value End If Next End Sub 3,366 2,515 1,485 849 845