"Overall, I found the ITI DELTA course to be a highly valuable and intellectually stimulating professional experience. The course challenged me to rethink familiar areas of language teaching at a much deeper level and significantly strengthened my analytical skills, particularly in relation to assessment, methodology and language awareness. Although demanding, the structure and academic rigour of the programme encouraged independent thinking and professional growth, and I feel more confident and better equipped to approach both classroom practice and exam preparation in a principled and informed way."

"I have enjoyed the course and the effective training environment for learning, the tutors were amazing, especially Joanne. Thank you so much, everyone!!!"

"The tutors were outstanding – knowledgeable, supportive, and genuinely invested in our development as teachers. Admin staff were incredibly efficient and friendly; everything ran smoothly from day one. And the location in the heart of the Old City couldn’t have been better – great food, quiet cafés , and a real community feel. Easily the best professional development decision I’ve ever made. Highly recommend this centre to anyone serious about getting their DELTA done right. 5 stars across the board! ⭐⭐⭐⭐⭐"

"The course was very useful and well-organised. It was easy for me to navigate through the Moodle portal. The useful materials were supplied and feedback I received was always on time and valuable. Sessions were quite interactive dealing with practical tasks and tips the tutors gave us were truly useful. "

"Delta Module 1 was a new experience of learning and reviewing with supportive trainers. "

"The tutors were really supportive, especially Jonne and Elna. Wish them prosperity."

"I took the course online, so the facilities and location were convenient and comfortable for me. The course itself was very good — I truly enjoyed it and learned a lot. I would love to join more of your future programs and hopefully have a place among your team at the institute someday."

"Thanks a lot to Liz, Tom and Elna for making this challenging journey a lot easier, more fun and more insightful. Love all my tutors. Thanks, a lot, Liz for your wonderful, constructive feedback sessions ❤️"

"It was nice. That's honestly an overall comment considering the good and the bad."

"I recently completed DELTA Module Three with ITI Istanbul, and I am deeply grateful for the enriching experience. The course tutors were incredibly responsive and supportive throughout the journey. Their guidance and encouragement significantly impacted my decision to continue studying with ITI. The tutors consistently demonstrated a high level of professionalism, and the course materials they provided were both detailed and well-organized. This structured approach made it much easier for me to stay on track and ultimately succeed in completing my assignment. Overall, ITI Istanbul offers a learning environment that genuinely supports professional growth, and I wholeheartedly recommend their DELTA programmes to anyone seeking high-quality teacher development."