Hello there! Based on your needs, I would recommend MagicSlides. This AI-powered Google Slide add-on is capable of transforming text into professional presentations, which aligns well with your requirement of converting written notes into slides.

The AI feature of MagicSlides generates slides with images and relevant content based on the given topic and slide count. This could be particularly useful for you as it can automate the process of creating presentations, saving you time and effort.

Moreover, MagicSlides offers a variety of customization options. You can choose from different themes, font choices, color palettes, and layouts to make your presentations stand out and match your unique style. This aligns with your need for customizable layouts and designs.

Lastly, MagicSlides supports all languages, making it a versatile tool for any classroom setting. It also has a user-friendly interface, which simplifies the design process and ensures a smooth experience.

I hope this helps! If you have any other questions or need further assistance, feel free to ask.