LEAVING CERTIFICATE: 6th year Higher Level 

Chemistry as an Extra Subject - 6th Year

  • Teacher
    John O'Sullivan
  • Exam
    Leaving Certificate
  • Level
    6th Year Higher Level
  • Learning Mode
    Online
  • Start Date
    September 2026
  • Day/Time of Weekly Grind
    Weds, 6:45 PM - 7:45 PM
  • Duration
    29 Weeks
  • Extra Recorded Lessons
    Weekly/ Bi-weekly
  • Revision Courses
    Xmas, Mock Prep, Easter, Last-Minute
  • Exams
    November, Mock
  • Project Supervision including in-person practical coursework where required
Chemistry Grinds
Meet Your Teacher

John O'Sullivan

John has been teaching Leaving Certificate Chemistry for over 24 years. He holds a degree in Chemistry and a H-Dip in Maths Teaching. Currently, he is assistant principal and the Head of ICT at his school.  

John has an extensive understanding and profound knowledge of the Chemistry course. For the past 10 years, he has been designing his own Mock exams. He has delivered revision courses and tutored Chemistry as an extra subject for over 16 years.

John has established an outstanding reputation for his ability to simplify complex course material and emphasise the critical aspects of each topic. Students have benefited from his expertise, teaching proficiency, and dedication to their academic success, leading to excellent results over many years.
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What is included

  • 1 hour live and recorded weekly grind with notes
  • 1 hour weekly/ bi-weekly recorded extra lesson
  • November, Mock Exams
  • Revision Courses: Christmas, Mock Preparation, Easter, Last-Minute
  • Project Supervision including in-person practical coursework where required


All project and coursework will be carried out in accordance with SEC guidelines.
You must be enrolled in a school where you can sit the exam and must list this external subject on any forms you complete for the Leaving Cert. 

What to expect

Live, interactive and exam-focused online classes to help you achieve your best grade possible.

Recorded classes: you will have access to the class recordings so you can replay the classes at your own pace, as often as you like.

High quality comprehensive notes.
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Our students love us

I decided to take up Chemistry last April as an outside school subject two months before the exam as I needed a H4 for course requirements. With John’s expert tuition I achieved a H3 in the leaving cert exam. He was exam-focused in his approach. He explained the difficult concepts and experiments clearly. This was particularly impressive considering all our grinds were done over zoom. He has a clear passion for the subject and a real interest in his students. My result would not have been possible without him.
Mr. O Sullivan’s Chemistry exam had a great balance of questions with enough challenging ones to keep me studying and not to start relaxing but also with some manageable ones to boost my confidence and reassure me I was on the right path.
The grinds were really helpful and worthwhile. Once I started the grinds I was able to pinpoint and focus on the difficult parts of the course which benefitted me a lot. I felt I was well prepared for my exam which definitely helped relieve a lot of stress
The pre-exam gave me an insight into what areas of the course I needed to focus on and it was a great to experience doing a full Leaving Cert style Paper.