Proofreading Class 5 Textbook for Spelling and Grammar Errors

I am seeking a professional proofreader to review a 340-page textbook intended for class 5. The work involves checking and correcting spelling and grammar mistakes throughout the text. The completed work must be delivered within 14 days. Ideal candidates should have strong language skills and experience in proofreading educational material. Please provide examples of your previous work if possible.