Hi EvelynC547 - Welcome!
A low cost option is this book:
http://www.educationaloptions.com/resources/resources_ruf_ar.phpNow Available! Losing Our Minds: Gifted Children Left Behind. Deborah's new book, published by Great Potential Press, combines four years of data gathering from 50 families with nearly 30 years of research and experience in the field of giftedness, individual differences, and high intelligence. The book is aimed primarily at parents and vividly describes the upper 10 to 15 percent of the intellectual continuum in human beings from birth to adulthood as manifested in their behaviors, thoughts, accomplishments, and test scores. She introduces the concept of Levels of Giftedness and makes it very clear how many factors contribute to a person's intellectual levels and achievement. Buy Now or order from Great Potential Press.
Like any other test, it can't tell you that your child isn't gifted, but if your kid fits her numbers, it can confirm that he is. The stories of gifted children are also lovely to give you a warm fuzzy that you aren't alone.
Welcome, Welcome, Welcome,
Grinity