CREATE TABLE table_27443 ("Prefecture" TEXT, "City/Town" TEXT, "High School Name" TEXT, "Year of Previous Participation" TEXT, "Total Number of Participation" FLOAT)

How many previous years did Maebashi Ikuei high school have a total number of 1 participation?
SELECT COUNT("Year of Previous Participation") FROM table_27443 WHERE "Total Number of Participation" = '1' AND "High School Name" = 'Maebashi Ikuei'
SELECT COUNT("Year of Previous Participation") FROM "table_27443" WHERE "High School Name" = 'Maebashi Ikuei' AND "Total Number of Participation" = '1'