what is the total number of schools listed in the table ?
CREATE TABLE table_203_721 (
    id number,
    "school" text,
    "location" text,
    "control" text,
    "type" text,
    "enrollment" number,
    "founded" number
)
SELECT COUNT("school") FROM table_203_721
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: what is the total number of schools listed in the table ? ### Input: CREATE TABLE table_203_721 (
    id number,
    "school" text,
    "location" text,
    "control" text,
    "type" text,
    "enrollment" number,
    "founded" number
) ### Response: SELECT COUNT("school") FROM table_203_721