All research proposals must address the question of what you plan to accomplish and why you want to and how you are going to do it.
A research proposal is usually around 2,500 words long although there is no upper or lower limit to this.
You should read any appropriate ethical guidelines and ask yourself how/whether you project follows these.
[All research students at Oxford University are required (before they commence fieldwork) to complete the Central University Research Ethics Committee (CUREC) checklist and obtain permission to undertake any fieldwork].
This is especially important if you wish to pursue a career as an academic in a UK university.
When you have completed all of this then get other people, your peers as well as those more experienced than you, to read it and comment.
You need to think about practical issues: if you are intending to undertake fieldwork, where and for how long?
Consider questions of access, for instance, will organisations etc.
The scientific basis of the art of teaching is marked by critical reasoning using diverse forms of data.
Often, that data are collected by students of educational research and by practicing teachers.