Nid oes unrhyw ragdybiaethau o ran y math o gynnig y gellid ei dreialu, er bod yn rhaid i geisiadau ddangos sut y byddai cynnig yn codi safonau addysgol.  Os cytunir ar gynnig, bydd gorchymyn cyfyngedig ar amser hyd at dair blynedd, gydag estyniad unigol posibl am gyfnod pellach hyd at tair mlynedd ychwanegol, yn cael ei wneud er mwyn caniatáu i'r treial fynd yn ei flaen.
There are no preconceptions as to the type of proposal that may be trialled, although applications must demonstrate how a proposal would raise educational standards.  If a proposal is agreed, a time-limited order of up to three years, with a possible one-off extension for up to a further three years, will be made allowing the trial to proceed.