JFS has announced it is to end the interim arrangement which has seen the school run jointly by an executive head and an acting head.
In a letter sent to parents, Geraldine Fainer, chair of governors, said the dual role would be replaced by a single head teacher.
The post will be advertised in "open competition", Mrs Fainer said.
Debby Lipkin, a consultant headteacher who works with Brent Council, was brought in last year to run the north-west London school alongside deputy headteacher Simon Appleman, who took over as acting head afterJonathan Miller resigned from the job.