ABOUT Me

Years in American Sign Language Tutoring
& Coaching Services

ASL Consultant | Deaf Lens Coach | Leadership Mentor
‍

ASL Scope is a transformative platform dedicated to expanding access, fluency, and confidence in American Sign Language. Founded by Sean Cosslett, a Deaf professional with a uniquely interdisciplinary background spanning electrical engineering, psychology, performing arts, and Deaf Studies, ASL Scope bridges language and culture through authentic connection.

Sean’s journey began in higher education, where he worked closely with interpreters across technical and academic settings. Through these experiences, he discovered the power of language to not only facilitate access but to empower identity and professional growth. With over four years of experience collaborating with interpreters and teaching sign language, Sean founded ASL Scope to guide clients in achieving breakthroughs, whether through developing ASL fluency, preparing for certification, or refining professional presence.

His teaching philosophy centers on accessibility, creativity, and real-world application. Sean’s approach weaves together storytelling, visual strategies, and cultural insight to help learners of all levels, from ASL 1 through 5, cultivate both expressive skill and cultural fluency.

Beyond teaching, Sean’s work celebrates the diversity of Deaf experiences and the evolving role of language in shaping identity and community. Through personalized coaching, interpreter mentorship, and community workshops, he continues to build bridges between Deaf and hearing worlds.

ASL Scope stands as more than a language learning platform. It’s a movement grounded in connection, empowerment, and the belief that language can transform how we see ourselves and each other.

OUR SERVICE

ASL Coaching & Interpretation Services

ASL Coaching & Skill Development
Build a strong foundation in American Sign Language or advance your current skills with structured one-on-one sessions. Whether you're preparing for an exam, improving fluency, or seeking to better support Deaf colleagues, Sean provides customized coaching to help you achieve your goals.

‍Conversational ASL & Comprehension Training
‍Engage in real-world ASL conversations at your own pace. Sean will guide you through expressive and receptive practice, focusing on essential elements such as non-manual markers, pacing, and clarity. This service is ideal for both new and experienced interpreters looking to refine their communication techniques.

‍ASL Interpretation Feedback & Diagnostics
‍Enhance your English-to-ASL interpretation with expert feedback. Sean provides detailed analysis and constructive insights to help you fine-tune your accuracy, fluency, and overall delivery. Bring a recorded sample of your work or engage in a live interpretation exercise to receive targeted feedback that supports your professional growth. Each session is designed to help you develop confidence, fluidity, and a deeper understanding of ASL. Whether you're just starting out or looking to advance in your career, Sean is here to support your journey.

"Working with Sean has been such a joy! When we started, I was new to photovoltaic and renewable energy terminology in ASL for sales calls and interviews; through Sean’s coaching and expertise, he helped me feel prepared and confident to interpret in those scenarios. He’s professional, personable, flexible, and makes every session both fun and productive. His great sense of humor, vivid storytelling, and creative solutions help me grow and keep my ASL skills sharp. I’d absolutely recommend his consulting to anyone looking to strengthen their skills and feel inspired along the way!"

Rachel Abbett

NIC-M, SHRM-CP

"From the start, Sean was communicative, reliable, and always punctual. He provided consistent support throughout the project, including bringing in a support interpreter to ensure smooth collaboration. What stood out the most was how he made me feel completely comfortable as I stepped into a new way of using both my brain and body to communicate."

Renee Heath, Owner

Made of Lionesses

"Sean Cosslett is an exceptional ASL consultant with whom I worked intensively during a year of ASL and Deaf cultural immersion. With nearly 30 years of interpreting experience, I found Sean’s brilliance, humor, and insight invaluable in refining my skills and building new confidence. He guided group interactions to reflect authentic Deaf communication and provided supportive, incisive feedback that elevated both my linguistic and cultural accuracy. His workshops were consistently innovative, intellectually engaging, and meaningful for interpreters at all levels. Sean’s professionalism, generosity, and collaborative spirit set him apart. I recommend him without reservation."

Deirdre Kosky-Kaupelis

M.Ed

"I hired Sean for ASL interpreting skill development. What started as a 3-month endeavor, I extended to a year. Sean evaluated my baseline skill through conversational weekly sessions allowing us to explore language around a variety of topics. In time,
I brought him work samples and received actionable feedback that I still use today. As a sign model, his native language is something to marvel at. He told impromptu stories allowing me the chance to practice voicing. He is Incidentally bright and funny making the sessions light and productive. Every session was worthwhile. Hire him."

Allyson Martel

RIT Interpreter

"My experience of one-on-one tutoring with Sean was by far the most helpful experience I have had in developing my ASL skills. Sean was knowledgeable, non-judgmental, and created a space where I was not afraid to make mistakes or look foolish—vital elements in the process of language-learning. Though I had already been signing for 7 years when I began to work with Sean, my skills skyrocketed from my work with him, and when I look back on my journey with ASL, there is a distinct contrast between “before” and “after” working with Sean. I owe my fluency to him!

Conner Lucus

LMSW, RIT Staff Therapist

OUR VALUE

At ASL Scope, we believe growth in American Sign Language goes beyond vocabulary and grammar. It is about building confidence, cultural awareness, and authentic connection. As a Deaf-led service, we offer a perspective rooted in lived experience, empowering interpreters, students, and professionals to engage with the Deaf community in ways that are authentic, inclusive, and meaningful.

What sets ASL Scope apart is our blend of technical expertise, cultural insight, and coaching grounded in trust. With a background spanning STEM, psychology, leadership, and performing arts, we provide tailored guidance that sharpens language skills, expands professional presence, and deepens understanding of Deaf culture.

We don’t merely teach ASL, we collaborate with you to unleash your potential, transform your communication, and expand your scope

Deaf-Led Expertise

Gain from authentic Deaf perspectives that enrich your ASL development and deepen cultural understanding.

Tailored Coaching

Receive personalized guidance crafted around your unique goals, whether fluency, certification preparation, or inclusive leadership.

Beyond Language

We don’t just teach signs; we empower confidence, connection, and professional presence.

Discover answers to all your questions and learn more about how we can elevate your brand

Looking to strengthen your ASL skills and gain deeper confidence in communication?

ABOUT Me

OUR SERVICE

How to Work With Me

OUR VALUE

Discover answers to all your questions and learn more about how we can elevate your brand