query: SELECT grade ,  count(DISTINCT classroom) ,  count(*) FROM list GROUP BY grade
question: For each grade, report that grade, that number of classrooms in which the thing is taught and that total number of students in that grade.
query_toks: SELECT grade , count ( DISTINCT classroom ) , count ( * ) FROM list GROUP BY grade
query_toks_no_value: select grade , count ( distinct classroom ) , count ( * ) from list group by grade
question_toks: For each grade, report that grade, that number of classrooms in which the thing is taught and that total number of students in that grade.