CREATE TABLE "table1_13967239_2" (
  "subject" text,
  "freshman_grade_7" text,
  "sophomore_grade_8" text,
  "junior_3rd_year" text,
  "senior_4th_year" text
);

Question: How many classes between senior and junior year for world history
SQL: SELECT COUNT("senior_4th_year") FROM "table1_13967239_2" WHERE "junior_3rd_year"='World History';

Question: What is after intermediate algebra
SQL: SELECT "senior_4th_year" FROM "table1_13967239_2" WHERE "sophomore_grade_8"='Intermediate Algebra';