New figures have found that those taking time to study on teacher training courses are not following up by signing up to education jobs.
Compiled by Buckingham University, the study discovered that, out of the 39,103 trainees who qualified in the summer of 2010, only 27,976, equivalent to 71.5 per cent, ended up in teaching jobs by January 2011.
Professor Alan Smithers and Dr Pamela Robinson, from Buckingham University, said that, considering many post-graduate certificate of education courses are funded publicly, the system is "very wasteful".
"It is no good having excellent entrants and outstanding inspection grades if the trainees do not go into teaching," Professor Smithers explained.
The report also suggested that those on more practical, school-based courses were more likely to carry on into a teaching job.
The National Association of Primary Education recently said that those who do go into teaching should not be responsible for deciding school policy and need to have clear guidelines for classroom management.