The 46-year-old has been out of work since being sacked as the manager of Hibernian earlier this month.
The Scot previously worked as Hughton's number two at Newcastle United.
Calderwood will be on the touchline for the Blues' trip to Blackpool in the Championship this weekend.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Wycombe WanderersWycombe | 18 | 12 | 4 | 2 | 39 | 21 | 18 | 40 |
| 2 | Wrexham | 19 | 12 | 4 | 3 | 28 | 11 | 17 | 40 |
| 3 | Birmingham CityBirmingham | 17 | 12 | 3 | 2 | 32 | 16 | 16 | 39 |
| 4 | Huddersfield TownHuddersfield | 18 | 11 | 2 | 5 | 28 | 16 | 12 | 35 |
| 5 | Stockport CountyStockport | 19 | 9 | 6 | 4 | 31 | 19 | 12 | 33 |
| 6 | Reading | 18 | 9 | 4 | 5 | 30 | 25 | 5 | 31 |
| 7 | Bolton WanderersBolton | 17 | 9 | 3 | 5 | 28 | 27 | 1 | 30 |
| 8 | Barnsley | 19 | 7 | 6 | 6 | 27 | 25 | 2 | 27 |
| 9 | Lincoln CityLincoln | 19 | 7 | 6 | 6 | 24 | 23 | 1 | 27 |
| 10 | Mansfield TownMansfield | 17 | 7 | 3 | 7 | 22 | 22 | 0 | 24 |
| 11 | Exeter CityExeter | 18 | 7 | 3 | 8 | 16 | 19 | -3 | 24 |
| 12 | Charlton AthleticCharlton | 18 | 6 | 5 | 7 | 18 | 19 | -1 | 23 |
| 13 | Blackpool | 18 | 6 | 5 | 7 | 26 | 31 | -5 | 23 |
| 14 | Stevenage | 17 | 6 | 4 | 7 | 13 | 16 | -3 | 22 |
| 15 | Peterborough UnitedPeterborough | 18 | 6 | 3 | 9 | 33 | 32 | 1 | 21 |
| 16 | Leyton Orient | 18 | 6 | 3 | 9 | 19 | 20 | -1 | 21 |
| 17 | Northampton TownNorthampton | 19 | 5 | 6 | 8 | 21 | 26 | -5 | 21 |
| 18 | Bristol Rovers | 18 | 6 | 3 | 9 | 17 | 26 | -9 | 21 |
| 19 | Wigan AthleticWigan | 18 | 5 | 5 | 8 | 15 | 16 | -1 | 20 |
| 20 | Rotherham UnitedRotherham | 17 | 5 | 5 | 7 | 16 | 20 | -4 | 20 |
| 21 | Crawley TownCrawley | 18 | 5 | 4 | 9 | 17 | 28 | -11 | 19 |
| 22 | Cambridge UnitedCambridge | 18 | 4 | 4 | 10 | 18 | 29 | -11 | 16 |
| 23 | Burton Albion | 18 | 2 | 5 | 11 | 16 | 30 | -14 | 11 |
| 24 | Shrewsbury TownShrewsbury | 18 | 3 | 2 | 13 | 18 | 35 | -17 | 11 |
| > League One Full Table | |||||||||
