For each grade, report the grade, the number of classrooms in which it is taught and the total number of students in the grade.
SELECT grade ,  count(DISTINCT classroom) ,  count(*) FROM list GROUP BY grade
SELECT grade ,  count(DISTINCT classroom) ,  count(*) FROM list GROUP BY grade
[{'Grade': 0, 'count(DISTINCT classroom)': 3, 'count(*)': 16}, {'Grade': 1, 'count(DISTINCT classroom)': 2, 'count(*)': 12}, {'Grade': 2, 'count(DISTINCT classroom)': 1, 'count(*)': 3}, {'Grade': 3, 'count(DISTINCT classroom)': 1, 'count(*)': 6}, {'Grade': 4, 'count(DISTINCT classroom)': 3, 'count(*)': 12}, {'Grade': 5, 'count(DISTINCT classroom)': 1, 'count(*)': 8}, {'Grade': 6, 'count(DISTINCT classroom)': 1, 'count(*)': 3}]