Independent schools
One teacher, a teaching space, and a steady stream of students. C3NTR puts your technique, repertoire and history in one place.
For performing arts schools
A knowledge home for your public speaking school.
Structure, delivery, presence and the craft of the speech
→ See a quick tour
Free for up to 30 students
No credit card
UK GDPR · EU (London)
Works offline
Your school's craft deserves a home
Speech structures get taught in class but rarely written. Delivery cues, pace, pause, posture, vary by teacher. Feedback notes sit in students' phones. C3NTR is a quiet place to write it all down once, in your school's voice.
Who this is for
Schools with multiple teachers
Two or more teachers, several classes a week. C3NTR holds the shared standard so every class draws from the same library.
Schools with debate teams
You run a debate team or competitive speech programme. Content locked by level keeps newer speakers on basics while team members see competition prep.
Built for teachers, not for IT
Your teacher opens the app, taps Edit, and writes the next delivery note in plain prose. The next class, the speaker arrives knowing the cue.
Write directly in the app
Like a notepad. New articles are drafts until you publish, so nothing goes live by mistake.
Mobile-first authoring
Edit on the phone between classes or on the way home. The same library, the same edit screen.
A working library in under an hour
Import the starter template in a few taps. Edit anything that doesn't fit. Publish when ready.
Levels, foundation, intermediate, advanced, competition
Content locked by level, in your school's progression
Tag any article with a minimum level. Foundation students see structure and basics. Intermediate see delivery work. Competition speakers see full prep. The same library, the right view per student.
A glossary of public speaking terminology
Public speaking carries its own vocabulary. C3NTR's glossary holds the terms in one place: the technical names, your school's translation, and the article each term appears in.
- Projection
- The ability to make your voice reach the back of a room without strain, using breath, resonance and clear shaping of sound rather than volume alone.
- Articulation
- The precision with which consonants and vowels are produced, making the words intelligible to a listener at distance.
- Pace
- The speed at which you speak, measured in words per minute and felt in how the audience absorbs what you say.
- Pause
- The deliberate silence between phrases or sections, used to let an idea land, to give the audience time to absorb, or to draw the room into the next moment.
- Opening
- The first sentence or two of a talk, the moment when the audience decides how much attention to give what follows.
- Through-line
- The single central idea that runs through a talk from start to finish, the answer to the question "what is this talk really about?"
Competitions, showcases, masterclasses
C3NTR isn't only the library. Schedule the next competition, post showcase dates, and let students see what's ahead. Announcements land on their Today tab and events sit on the calendar.
Start from our Public Speaking template
A working starter with 14 articles, 2 short videos, a 8-terms glossary across 5 tags (Getting Started, Foundations, Structure and Story, Delivery, Practice and Feedback). Import in a few taps, then edit anything that doesn't fit your school. Every article, term and tag is yours from the moment you import.
See the Public Speaking template Template source:assets/templates/performing_arts/public_speaking.c3t.md
Inside the app
A look at how the library, articles and grade controls feel in your students' hands.
Plays well with what you already have
Bring your existing scripts, scores and notes in with smart Word document import or paste Markdown directly from your school's archive.
Word documents
Smart import reads headings and turns them into draft articles. You review before anything publishes.
Markdown from any editor
Notion exports, Obsidian notes, Bear, plain .md files. Paste or import.
C3NTR templates
Open .c3t.md format. Schools can share templates with each other without us in the middle.
UK GDPR · DPA 2018
UK GDPR compliant. Hosted in the EU (London).
C3NTR is built around UK data protection law from the ground up. Your school's data sits in the EU on Google Cloud London, the same region we manage from.
UK GDPR + Data Protection Act 2018
Built around UK GDPR Article 6 lawful bases. Subject access requests answered within one calendar month.
Hosted in the EU (London)
Your school's data sits on Google Cloud in the europe-west2 (London) region. No transfer outside the UK or EEA for core operation.
Encrypted in transit
All data is TLS encrypted. Access restricted to personnel with a clear business need.
Account deletion on request
Permanent deletion of personal data and content via in-app or written request.
What C3NTR is, and what it isn't
A library your school owns
Another booking or billing system
Built for how schools actually teach
A generic course builder
Calm, focused reading for students
A feed competing for attention
Start free. Move up when you outgrow it.
Seed
Free forever
Up to 30 students
All core features. No credit card.
Start freeSchool
£39/mo
£32/mo billed annually
Up to 150 students
Push notifications. 1 GB media storage.
Choose SchoolAcademy
£69/mo
£57/mo billed annually
Unlimited students
Multi-instructor publishing. Engagement analytics. 5 GB media storage.
Choose AcademyStudent? Show this to your teacher.
If you study public speaking and you'd love a quiet library you can return to between classes, share this page with your teacher. Most schools start on the free Seed plan in under five minutes.
Common questions
Can students only see their level's material?
Yes. Tag any article with a minimum level. New students see only foundations. Teachers see everything.
Does it cover Toastmasters, debate societies, your school's method?
Yes. The starter is method neutral. Toastmasters, debate societies, your school's method can adapt the curriculum without rewriting.
Can my school customise the public speaking template?
Yes. Every article, exercise and tag is editable. Add your school's repertoire, your favoured methods and your house standards.
How long does it take to set up?
Most schools have a working library in under an hour. Import the starter template in a few taps, then edit anything that doesn't fit. Starting blank takes a little longer. Allow an hour or two to write your first ten articles. Students can use the app the day you publish.
Do I have to stop using my booking system?
No. C3NTR is a knowledge library for your curriculum, terminology and progressions. Booking, billing and scheduling stay with the tools you already use.
Is there a free plan?
Yes. Seed is free forever for up to 30 students, with no credit card required. Move up to School (£39/mo) or Academy (£69/mo) when you outgrow it.
Other performing arts disciplines
Teach a different style? Tell us.
Whether it's a specific public speaking lineage we don't list, or another discipline entirely, drop us a line and we'll add a starter template. In the meantime, the app already works for any structured curriculum, your library starts blank in a few minutes.
Ready to give your public speaking students a knowledge home?
Free for the first 30 students. No credit card. A working library in under an hour.
Start free for your school