In 2003, only 19 percent of high school students took classes that could earn them college credits (advanced placement or international baccalaureate courses). by 2013, that number had increased to _____ percent.
By the year of 2013 the number of high school students took classes that could earn them college credits in advanced placement or international baccalaureate course has increased to 33 percent, it is only 19 percent in the year 2003 so it had increase by 24 percent but the answer is 33 percent.
