Your Lessons.Prepared While You Sleep.

Finally switch off when you get home.

Aligned to 7 national curriculums

7-Day Plus Trial • First lesson plan in seconds • GDPR compliant

75%say workload is their biggest stressor
50-55haverage UK teacher workweek
40%consider leaving within 5 years
Sundayevenings spent planning, not with family
75%say workload is their biggest stressor
50-55haverage UK teacher workweek
40%consider leaving within 5 years
Sundayevenings spent planning, not with family
75%say workload is their biggest stressor
50-55haverage UK teacher workweek
40%consider leaving within 5 years
Sundayevenings spent planning, not with family
75%say workload is their biggest stressor
50-55haverage UK teacher workweek
40%consider leaving within 5 years
Sundayevenings spent planning, not with family
The Hidden Cost of Teaching

It's not the children. It's not the teaching.It's the work that follows you home.

Work that should already be done, eating into your evenings. Your thoughts consumed by tomorrow's lessons, when you should be present with your family.

Teacher working late at 9pm
9:14pmBefore LESSO

"Just one more thing to finish..."

Teacher present with family
Same eveningWith LESSO

"Mrs J has prepared everything already..."

The Difference

What Mrs J Does For You.One Platform. All Prepared.

See how Mrs J transforms every part of your workload — from planning to communications.

Lesson Planning

With Mrs J

Review & approve

Done for you
Without Mrs J

Old Way

Manual creation

AI Tools

Prompting + editing

Presentations

With Mrs J

Your style, ready to teach

Prepared overnight
Without Mrs J

Old Way

Build from scratch

AI Tools

Generic, needs personalising

Differentiated Resources

With Mrs J

SEN, EAL, G&T auto-generated

Included
Without Mrs J

Old Way

Create 3 versions manually

AI Tools

Prompt each version

Email Management

With Mrs J

AI prioritises & drafts

5 mins daily
Without Mrs J

Old Way

Check constantly

AI Tools

No help

Daily Dashboard

With Mrs J

AI-prioritised tasks & prep

Ready when you are
Without Mrs J

Old Way

Spreadsheet + sticky notes

AI Tools

No daily overview

AI Upskill

With Mrs J

AI + teaching, combined

Learn as you go
Without Mrs J

Old Way

Random CPD sessions

AI Tools

YouTube rabbit holes

One platform. All prepared. Review and approve — not create and fix.
Inside LESSO

See What Mrs J Can Do

Six tools that replace your entire workflow. One login. Zero friction.

Ask Mrs J

Just Tell Her What You Need.

Natural conversation with your AI co-teacher. No prompts to learn. Just ask for what you need in plain English.

  • Conversational AI that remembers your preferences
  • Instant lesson ideas and curriculum support
  • Remembers your preferences for 6 months
  • Reference previously uploaded documents
Mrs JOnline
J

Good morning! I've prepared your Year 4 Maths lesson on fractions. Would you like me to add differentiated worksheets?

Yes please, include SEN and G&T versions

J

Done! 3 worksheets ready for your review ✓

Curriculum Aligned

Your Curriculum. Built In.

Not generic. Not American. Mrs J knows your national standards — so your outputs are curriculum-aligned, right first time.

Our Story

We Didn't Just Study Teacher Burnout. We Lived It.

Amanda still teaches today. Over a decade in the classroom. The late nights, the Sunday scaries, the guilt of choosing work over family — she knows it all.

Amanda

Amanda

The Teacher

2021

When Reality Hit Home

Our first child arrived. The joy of parenthood overshadowed by the reality of a job that never stops.

2023

The Part-Time Paradox

Went part-time after baby number two. Same late nights. Same stresses. Less money. This wasn't the answer.

Late 2024

The Breaking Point

"I can't keep doing this." Backed into a corner with no way out. Believing this is how it would always be.

"Every evening planning was an evening lost with my family"

Luke

Luke

The Builder

Late 2024

The Turning Point

She'd be there at dinner, at bedtime. But, I could see it. The invisible weight pulling her mind back to school.

Early 2025

The Build

An AI co-teacher that does the work while she sleeps. In her style, with her voice, to her standards.

Now

LESSO Is Born

What used to take your whole Sunday is done before your coffee goes cold. Review, approve, teach. That's it.

"I've built the AI co-teacher every teacher deserves."

Beta Teacher Feedback

Sunday Roast, Not Sunday Scaries

Real feedback from educators who got their evenings back.

Video testimonials coming soon.

Sarah M.

Year 4 Teacher

Oakfield Primary

Video coming soon

James T.

Head of English

Riverside Academy

Video coming soon

Emma L.

NQT, Reception

Hillside Infants

Video coming soon

Michael R.

Deputy Head

Greenwood Secondary

LIVE PREVIEW
Video coming soon

Rachel K.

Year 6 Teacher

St. Mary's Primary

Video coming soon

David W.

SENCO

Meadow Lane School

Video coming soon

Lisa H.

Maths Lead

Parkview Academy

Video coming soon
Pricing

What's Your Weekend Worth?

Your evenings back. Your weekends protected. For less than a coffee a week.

Put the joy back in your staffroom.

LESSO gives every teacher their evenings back. Flexible plans for schools and MATs.

Speak to Our Founders

Core

Everything you need to get started

£7/month
  • 20 lesson bundles per month
  • 1,000 chats with Mrs J incl. voice notes
  • Always-on citations
  • Full planner access
  • BrandKit — fonts, colours & frameworks
  • Web search
  • Canva-style editor
  • Presenter mode with lesson notes
  • LESSO Academy access
  • My Messages
  • AI images in resources
  • Overnight lesson prep
Best Value

Pro

Never work evenings again

£17/month
  • Everything in Core
  • 50 lesson bundles per month
  • 1,000 chats with Mrs J
  • 3 activities per bundle
  • AI Images included
  • Mrs J Magic — AI co-pilot in the editor
  • Email analysis & AI draft replies
  • My Morning daily briefing
  • 2-week overnight prep horizon
  • Full LESSO Academy access

Plus

Unlimited* prep. Priority everything.

£37/month
  • Everything in Pro
  • Unlimited* lesson bundles
  • Unlimited* chats with Mrs J
  • 5 activities per bundle
  • AI Images included
  • Full-term overnight prep horizon
  • Early access to new features
  • Priority support
7-Day Plus Trial
Cancel anytime
100% UK Data Sovereignty

*Fair use policy applies.

Still On The Fence?

Got Questions? We've Got Answers

Here's why teachers who were sceptical became our biggest advocates

ChatGPT is a general purpose AI, powerful but broad. LESSO take personalisation to a new level. Mrs J knows your curriculum, learns your voice, and delivers materials you can simply review and approve — not create and fix.

Mrs J learns your voice over time. Upload your past lessons and frameworks, and she’ll match your style, your school’s branding, and your preferred structure. Review and approve — it’s your work, done for you.

Just talk to Mrs J in plain English. No prompts to learn, no menus to navigate. If a tool is hard to use, it’s the tool’s fault, not yours. If you can send an email, you can use LESSO.

100% UK-GDPR compliant with full UK data sovereignty. Your school’s files and pupil information never leave our secure UK servers. Your data stays in the UK, always.

LESSO replaces tools — it doesn’t add to them. One place for your planning, resources, communications, and training. Fewer logins, less thinking, and no more juggling between apps. It’s designed to fit how you already work.

Everything you need to get started — for less than 25p a day. Create up to 20 documents a month, chat with Mrs J as much as you need, and plan your week with your school’s branding.

Pro is for teachers who never want to work evenings again. Your lessons are prepared while you sleep, ready to review in the morning. All this for less than 60p a day — less than most teachers spend on the tools LESSO replaces.

Mrs J supports 7 curriculum regions: England, Scotland, Wales, Northern Ireland, Ireland, Australia, and New Zealand. She aligns every lesson to your national standards, key stage, and subject.

Every new signup gets 7 days of full Plus access. Experience everything LESSO offers, including overnight prep, before choosing your plan.

Core (£7/month) is perfect for getting started. Pro (£17/month) is for teachers who never want to work evenings again — with overnight prep and AI-powered editing. Plus (£37/month) gives you unlimited prep, priority support, and early access to new features.

Stop Thinking About Work When You Get Home

Your lessons. Prepared while you sleep. On brand. Right first time.

Review and approve — not create and fix. Try everything for 7 days, choose your plan when you're ready.

Tell Mrs J what you need — she'll have it ready by morning
7-Day Plus TrialCancel Anytime100% UK Data Sovereignty

7-Day Plus Trial: Experience everything LESSO offers. Choose your plan when you're ready.