Table: mlb_draft_players_4
Columns: player
position
school
hometown
mlb_draft

Question: The catcher went to what school? 
SQL: SELECT "school" FROM mlb_draft_players_4 WHERE "position" = 'Catcher'

Question: How many schools did Mike Jones attend?
SQL: SELECT COUNT("school") FROM mlb_draft_players_4 WHERE "player" = 'Mike Jones'