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 "2-12074447-4" 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 "2-12074447-4" WHERE "Peak lessons taught" < 80.0 AND "% 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 "2-12074447-4" WHERE "% of negative evaluations" = '0.8%' AND "Evaluation average (From April 2009)" = '4.2';