D.M.
Silvan learning center or private certified reading tutor, it will cost you money, but reading is essential for all learning and if you don't want them held back its worth the investment in your child.
As a former teacher I want to add (SEEING THESE PREVIOUS COMMENTS), the teacher usually has 22 students, and the school is public, there are resources such as reading programs in 1st Grade as well as small group reading instruction for your child. Some teachers do give up their free time to help an individual child, however that usually is their free/planning time for all the students. A teacher is not a bad teacher if your child isn't interested in reading, your child isn't a bad child either, its just finding that individual instruction is what is important. Parents have a large role in teaching reading and it starts with before they go to school, because your child likes to play outside and seems uninterested in books doesn't mean you shouldn't read and get them excited about reading. What happened in first grade, was your son in special reading groups that were available at his school?
Whatever it takes is what is important blaming a teacher is not an answer its avoiding the issue. The issue is your child's reading needs to improve. Work with the teacher, find out if there are any tutoring options available, programs and such. Your child's reading shouldn't depend blaming teachers,or making excuses of not interested, Second grade is reading comprehension and fluency(reading speed), Third grade is Science and Social studies vocabulary added in and writing creative stories. Theres no time to waste.
I have used reading rabbit, jumpstart games to motivate children to read, I do not use them as reading tools however they are good practice for skills, I used them as rewards for their effort with me during my reading instruction time. Praise, motivating and keeping it fun is essential. A Positive attitude is everything as reading is a big milestone and thought to be something in the Schools hands but actually they can't do it without the number one teacher their parents encouragement, instruction, and praise as well.
Best Wishes