Season 20 aired between 16 Mar 2015 and 19 May 2015, 14 episodes.
Episodes
E01
Week 1: Spring 2015 Season Premiere
16 Mar 2015
E02
Week #1 Results & Week #2 Performances
23 Mar 2015
E03
Week #2 Results & Week #3 Performances
30 Mar 2015
E04
Week 4: Most Memorable Year
06 Apr 2015
E05
Week #4 Results & Week #5 Performances
13 Apr 2015
E06
Week 6: Spring Break Night
20 Apr 2015
E07
Week 7: Eras Night
27 Apr 2015
E08
10th Anniversary Special
28 Apr 2015
E09
Week 8: America's Choice
04 May 2015
E10
Week 8: Results
05 May 2015
E11
Week 9: Performances
11 May 2015
E12
Week 9: Results
12 May 2015
E13
Week 10 The Finals
18 May 2015
E14
Season Finale Results Show
19 May 2015