CREATE TABLE "belt_requirements" (
  "evaluation_average_from_february_2011" real,
  "evaluation_average_from_april_2009" text,
  "evaluation_average_before_april_2009" text,
  "pct_of_negative_evaluations" text,
  "submitting_schedule_on_time" text,
  "punctuality_attendance_issues" text,
  "peak_lessons_taught" real
);

Question: What is the largest number of Peak lessons taught when the Evaluation average (Before April 2009) was 4.4?
SQL: SELECT MAX("peak_lessons_taught") FROM "belt_requirements" WHERE "evaluation_average_before_april_2009"='4.4';

Question: What is the mean Evaluation number (before April 2009) when the Peak lessons taught was less than 80 and the negative percentage of evaluations was 0.8%?
SQL: SELECT "evaluation_average_before_april_2009" FROM "belt_requirements" WHERE "peak_lessons_taught"<80 AND "pct_of_negative_evaluations"='0.8%';

Question: What is the mean Evaluation number (Before April 2009) when the percentage of negative evaluations was 0.8% and the mean Evaluation number of April 2009 was 4.2?
SQL: SELECT "evaluation_average_before_april_2009" FROM "belt_requirements" WHERE "pct_of_negative_evaluations"='0.8%' AND "evaluation_average_from_april_2009"='4.2';