Orton-Gillingham (OG) Assessment

What is an Orton-Gillingham Assessment?

An Orton-Gillingham assessment examines clients’ skills and knowledge related to structured literacy programs, such as the Wilson Reading System. This type of evaluation includes assessment of sound-knowledge, mastery of common letter patterns, and reading and spelling of different syllable types, in addition to concepts commonly found in structured literacy programs. An Orton-Gillingham assessment provides teams in-depth information for intervention planning.

Who Might Need an OG Assessment?

If your child is receiving structured literacy as an academic intervention, or your team is considering implementing this type of intervention, you may benefit from having an OG assessment. This type of assessment looks at both skills and concept knowledge commonly included in structured literacy interventions and will provide your school team with information about areas that need most intensive instruction.

What Will the Assessment Look Like?

The average wait time for your first appointment is typically 6-10 weeks after we receive your signed paperwork. Appointments are only scheduled upon receipt of signed practice documents.

An OG assessment includes an evaluation of skills and concept knowledge related to structured literacy programs including:

  • Sound-Symbol Knowledge

  • Decoding (Reading Regular Words)

  • Encoding (Spelling Regular Words)

  • Reading Sight Words

  • Spelling Sight Words

  • Analysis of Structured Literacy Concept Knowledge

How Long Will It Take to Receive Assessment Results?

Once you’ve completed your final testing session and all associated paperwork has been returned, the feedback session will be scheduled approximately two weeks from that point. During that time, the assessments are scored, data is compiled, and a thorough report is written.

What Happens After the OG Assessment Results?

After the feedback session, you will be provided a copy of the report.

At times, parents or districts request that we attend school meetings with the student's team to review the results of the assessment. Our meeting attendance fees are $125 per hour, including travel time if necessary.