The NASUWT is locked in a second dispute with the school over its handling of teacher monitoring, which it has branded as "intrusive".
Six days of strike action had been planned on this separate issue before Christmas but these have been put on hold pending further talks.
Derby City Council has said it is taking legal action against the Government in a bid to block its plans to turn the school into an academy.
It claims that improvements are already taking place after improved GCSE results this summer, although it had plans to impose its own interim executive board, which were scuppered by the Government's action.
Education Secretary Michael Gove, has defended his decision to take over a school in Derby because of "serious concerns" about standards.
Teachers at a school in Derby have defended their decision to go on strike over plans by the Government to turn it into an academy.