Martin Kuhl's side's achievement was confirmed after closest-rivals Derby Country drew with West Bromwich Albion to leave Reading in an unassailable second position, ahead of the Royals' final game of the season with the Baggies.
Table-toppers Middlesbrough can still be caught with one game left in the 2014/15 campaign - full table here - which could see the season end on an even bigger high for the academy team, who won the inaugural U21 Cup last season. Furthermore, it marks the end of a year in which 11 academy products have made their debut for the senior Reading team, alongside established pros such as Jem Karacan and Alex Pearce.
Well done to all the lads that have contributed on getting promoted all deserved it!!— Aaron Kuhl (@Aaron_Kuhl) May 5, 2015
To reach Division One, which houses the likes of Chelsea and Manchester United's academy sides, Reading embarked on a staggering seven-game winning-streak, keeping seven clean-sheets in the process. It included a memorable 1-0 win over an Arsenal side containing Jack Wilshere and Abou Diaby at the Emirates Stadium, as the Gunners were brushed aside into fourth-place in the race for promotion.
The season finale takes place at the Madejski Stadium on Friday 15th May, kicking off at 7pm with free entry.