| Year | City, Country | Experiment A | Experiment B |
| 2003 | Dublin, Ireland | Photosynthesis Answer Sheet Marking Scheme |
Properties of Portions Answer Sheet Marking Scheme |
| 2004 | Groningen, Netherlands | Hexokinase Assay Answer Sheet Marking Scheme |
Luminescence and Plastic LDSs Answer Sheet Marking Scheme |
| 2005 | Galway, Ireland | Water Quality Answer Sheet Marking Scheme |
Salinity & Mussel Physiology Answer Sheet Marking Scheme |
| 2006 | Brussels, Belgium | CSI Brussels & Answer Sheet Marking Scheme |
Respiration & Boyle’s Law Appendix Marking Scheme |
| 2007 | Potsdam, Germany | All About the Potato Answer Sheet Marking Scheme |
All about Starch Answer Sheet Marking Scheme |
| 2008 | Nicosia, Cyprus | Energy from Light Answer Sheet Marking Scheme |
Light Energy Answer Sheet Marking Scheme |
| 2009 | Murcia, Spain | Fibres Answer Sheet Marking Scheme |
Fruit, Juices & Food Answer Sheet Marking Scheme |
| 2010 | Gothenburg, Sweden | Water Answer Sheet Marking Scheme |
CSI Sweden Answer Sheet Marking Scheme |
| 2011 | Pardubice, Czech Republic | All about Beer Answer Sheet Marking Scheme |
Lenses including Contact Lenses Answer Sheet Marking Scheme |
| 2012 | Vilnius, Lithuania | Amber Answer Sheet Key |
Space Exploration Answer Sheet Appendix 1 Appendix 2 |
| 2013 | Luxembourg | Silicon From Nature to Hi-Tec Appendix 1 Appendix 2 Answer Sheet Marking Scheme |
Renewable Energy Appendix 1 Appendix 2 Answer Sheet marking Scheme |
| 2014 | Athens, Greece | Olive Oil Answer Sheet |
Sea Water Answer Sheet |
| 2015 | Klagenfurt, Austria | Blowing in the Wind Answer Sheet Additional Information Marking Scheme |
Art Forgery Answer Sheet Marking Scheme |
| 2016 | Tartu, Estonia | Milk Day Answer Sheet Marking Scheme |
Battery Day Answer Sheet Marking Scheme |
| 2017 | Copenhagen, Denmark | ICE Appendix A1 Appendix A2 Appendix B Appendix C Answer Sheet Marking Scheme |
OCEAN Timer Manual Appendices A-F Answer Sheet Marking Scheme |
| 2018 | Ljubljana, Slovenia |
