Based on your query, I recommend using ElevenLabs to create your podcast. This tool leverages voice AI to help users create or clone voices that can speak in up to 30 languages. It can make learning materials like audiobooks, interactive language apps, and voiceovers sound like a real person.

Here's how ElevenLabs can help you:

• Voice Creation: You can build synthetic voices from scratch by selecting gender, age, and accent. This feature allows you to create a custom voice that fits your teaching style for your podcast.
• Speech Synthesis: This feature uses the voices you made to produce final audio outputs. It can turn your written lessons into spoken words, making your podcast more accessible.
• 30 Language Support: The voices retain their characteristics across languages. This feature can help you teach languages with a consistent voice, aiding understanding.

The ElevenLabs dashboard allows you to manage your voice models, adjust stability and clarity, and input text for speech. You can even try the software before signing in, making it simple to test out the tool.

However, please note that some users have found it slightly expensive for long-form content, such as weekly readings. Also, the software has fewer post-production tools; what you generate is what you get. Non-English voices may have lesser quality, as they are still in the "experimental" phase.

In terms of pricing, ElevenLabs offers a free plan with 10,000 characters/month, a Starter Plan at $5/month with 30,000 characters and a commercial license, and a Creator Plan at $22/month with 100,000 characters and higher audio quality.

Overall, ElevenLabs can serve as a versatile tool for educators to make learning more engaging and accessible. It stands as a robust solution for those aiming to step up their educational content.