I am the gifted and talented facilitator on my campus, so I am the one who identifies and tests students for the gifted service at my school. I administer multiple assessments, all of which serve as gifted indicators:
GATES (Gifted and Talented Evaluation Scale) parent and teacher evaluation: This evaluation assessess the student in terms of the attributes of creativity, artistic talent, leadership, academic skills, and intellectual ability.
Naglieri Nonverbal Abilities Test: This test is completely nonverbal and tests students' abilities to use spatial reasoning, logic, and comparison.
Cognitive Abilities Test: This test has three main sections: Verbal, Cognitive, and Nonverbal.
Student work: Samples of student work are also submitted to our district selection committee, especially if a student is specifically gifted in art or music, but may not have performed as well in some of the other assessments.
I usually begin identifying students first through teacher recommendations that a student be tested for the gifted program; after the student has been identified and permission to test has been approved by the parent, I administer the above mentioned tests to see how the student performs compared to the national percentiles. For a student to be admitted into the gifted service in my district, he or she must score 96% or higher as compared to the national percentile for their age group in at least six out of the eight indicators that I use for assessment.