Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_52897 ( "Evaluation average (From February 2011)" real, "Evaluation average (From April 2009)" text, "Evaluation average (Before April 2009)" text, "% of negative evaluations" text, "Submitting schedule on time" text, "Punctuality/Attendance issues" text, "Peak lessons taught" real )

### 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%?

### Accurate SQL ###

SELECT "Evaluation average (Before April 2009)" FROM table_52897 WHERE "Peak lessons taught" < '80' AND "% of negative evaluations" = '0.8%'