Dear Mrs. Edwards,
I would love to fill your position as Substitute Teacher, am well qualified, and have included my resume to offer some background on my career.
I found your advertisement seeking a Substitute Teacher for your school last week, while looking for a part time role that could give me the schedule I needed to care for my toddler; while also, giving me a chance to do what I love and what I am best trained in. I graduated from Bluefield College in 1994 with a degree in Art Teaching, and worked in this role for two prominent private schools in the area for a combined value of nine years. My main areas of focus were English Writing and English Literature, and the age group was prep school juniors and seniors. Your ad seeks the same caliber of teacher and in the same discipline, and I know I am the best match for this esteemed position of Substitute Teacher.
Would you please consider my enclosed resume, and then schedule a time when we could meet? My phone number is: (555)-555-5555, and the best time to call is after 2pm. Thanks.