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_15260 ( "Rank" real, "Team" text, "Country" text, "Value ($M)" real, "Revenue ($M)" real )

### Question ###
Name the highest revenue for schalke 04 with rank less than 10

### Accurate SQL ###

SELECT MAX("Revenue ($M)") FROM table_15260 WHERE "Team" = 'schalke 04' AND "Rank" < '10'