CREATE TABLE table_61767 ("School" CLOB, "Suburb/Town" CLOB, "Years" CLOB, "Founded" FLOAT, "Website" CLOB)

On average, when were vineyard schools founded?
SELECT AVG("Founded") FROM table_61767 WHERE "Suburb/Town" = 'vineyard'
SELECT AVG("Founded") FROM "table_61767" WHERE "Suburb/Town" = 'vineyard'