AP CS Test Takers and Pass Rates Up, Half of Kids Don't Get Sparse Arrays At All

theodp writes: Each June, the College Board tweets out teasers of the fuller breakouts of its Advanced Placement (AP) test results, which aren't made available until the fall. So, here's a roundup of this year's AP Computer Science tweetstorm: 1. "Wow — massive gains in AP Computer Science participation (25% growth) AND scores this year; big increase in % of students earning 4s & 5s!" 2. "2015 AP Computer Science scores: 5: 24.4%; 4: 24.6%; 3: 15.3%; 2: 7.1%; 1: 28.6%." [3 or above is passing] 3."Count them: a whopping 66 AP Computer Science students out of 50,000 worldwide earned all 80 pts possible on this year's exam." 4. "Remember that AP exam standards are equated from year to year, so when scores go up, it's a direct indication of increased student mastery." 5. "Many AP Computer Science students did very well on Q1 (2D array processing–diverse array); >20% earned all 9/9 pts" [2015 AP CS A Free-Response Questions] 6. "The major gap in this year's AP Computer Sci classrooms seems to be array list processing; Q3 (sparse array): 47% of students got 0/9 pts."