In Alaska with school count of 1 from year 2011 to 2013, how many of the students are white?
Alaska refers to state = 'Alaska'; from year 2011 to 2013 refers to year BETWEEN '2011' AND '2013'; white refers to race = 'W';
SELECT COUNT(T2.race) FROM state_sector_details AS T1 INNER JOIN state_sector_grads AS T2 ON T2.stateid = T1.stateid WHERE T1.schools_count = 1 AND T2.year BETWEEN 2011 AND 2013 AND T2.race = 'W' AND T1.state = 'Alaska'