Season 1

Season 1 was announced on March 13, 2014 by Nickelodeon. The season was ordered for 13 episodes, but was bumped up to 20 episodes later on.

The season premiered with the episode, Pilot, which aired on September 13, 2014, and ended with the episode, Family Matters, which aired on March 24, 2015.

Summary
10-year-old Dawn Harper's sibling rivalry with her three brothers (Nicky Harper, Ricky Harper and Dicky Harper) is heightened by the fact that they are quadruplets.

Main Cast

 * Lizzy Greene as Dawn Harper (20/20 Episodes)
 * Casey Simpson as Ricky Harper (20/20 Episodes)
 * Mace Coronel as Dicky Harper (20/20 Episodes)
 * Aidan Gallagher as Nicky Harper (20/20 Episodes)
 * Allison Munn as Anne Harper (20/20 Episodes)
 * Brian Stepanek as Tom Harper (20/20 Episodes)
 * Gabrielle Elyse as Josie Cooper (13/20 Episodes)

Recurring Cast

 * Kyla Drew Simmons as Mae Valentine (5/20 Episodes)
 * Cody Keith as  Oscar  (5/20 Episodes)
 * Lincoln Melcher as Mack (3/20 Episodes)

Special Guest Cast

 * Alex Morgan as Herself
 * Bob Pflugfleder as Himself

Episodes

 * 1) 09/13/14 - Pilot (101)
 * 2) 09/20/14 - Dawn Moves Out (104)
 * 3) 09/27/14 - Get Sporty-er! (103)
 * 4) 10/04/14 - Field of Brains (107)
 * 5) 10/18/14 - Scaredy Dance (111)
 * 6) 11/01/14 - Remote Control Control (105)
 * 7) 11/08/14 - Poo Dunnit (110)
 * 8) 11/15/14 - I Got Your Back (109)
 * 9) 11/22/14 - The Sad Tail of Gary-Chip-Tiny-Elvis-Squishy-Paws (108)
 * 10) 11/29/14 - Santa's Little Harpers (113)
 * 11) 01/10/15 - The Quadfather (102)
 * 12) 01/24/15 - The Quad-Test (115)
 * 13) 01/31/15 - The Secret (116)
 * 14) 02/07/15 - Take the Money and Run (112)
 * 15) 02/14/15 - Valentime's Day (118)
 * 16) 02/28/15 - Piggy, Piggy, Piggy & Dawn (117)
 * 17) 03/07/15 - Quad-ventures in Babysitting (106)
 * 18) 03/14/15 - M.D. Day (119)
 * 19) 03/21/15 - Abraquadabra (120)
 * 20) 03/24/15 - Family Matters (114)

Trivia

 * The season was originally ordered for thirteen episodes, however, the season was later expanded by seven episodes, adding it up to a total of twenty episodes.
 * This season introduces three recurring characters, including Josie Cooper, Mae Valentine and Mack.
 * Josie Cooper is considered a main character, despite being absent for seven episodes.
 * This is the only season to feature Josie Cooper.
 * There were two special guest stars in the season, they were Alex Morgan as herself (a Soccer Player) and Bob Pflugfleder as himself, also known as Science Bob.
 * This season had the highest average number of viewers in the series with 1.75 million viewers.