CREATE TABLE teachers (lastname TEXT, firstname TEXT, classroom DECIMAL)
CREATE TABLE list (lastname TEXT, firstname TEXT, grade DECIMAL, classroom DECIMAL)

How many teachers does the student named CHRISSY NABOZNY have?
SELECT COUNT(*) FROM list AS T1 JOIN teachers AS T2 ON T1.classroom = T2.classroom WHERE T1.firstname = "CHRISSY" AND T1.lastname = "NABOZNY"
SELECT COUNT(*) FROM "list" AS "T1" JOIN "teachers" AS "T2" ON "T1"."classroom" = "T2"."classroom" WHERE "CHRISSY" = "T1"."firstname" AND "NABOZNY" = "T1"."lastname"