need a native english teacher for a kid

I need an English teacher for an 8th grade kid. The teacher must be native speaker, female and hold necessary education to do the job. The job to do is simply testing my kid's knowledge in English within 1-2 lessons. The written and oral tests should be developed by the teacher herself and arranged to be held through video chat. The test forms should be small to fit into web cam for the teacher to easily see how was the test done by kid. The testing should result in some reference letter to our local school in English with grades given to my kid and with recommendations on further studies. The teacher must be able to provide some records on her education and copy of teacher's certificate. The total budget is no more than 30$. To give you an understanding of the level of English to be tested I will provide you with some exercises, vocabulary and texts from school textbook.