Andres, IB DP Chemistry Examiner

Andres is an experienced IB Chemistry educator, active IB Examiner and former Head of Chemistry, bringing over 13 years of teaching experience across international schools in the UAE, Saudi Arabia and LATAM. Combining deep subject knowledge with first-hand experience assessing IB student work, Andres offers a distinctive, assessment-informed approach to Chemistry tuition. He helps students move beyond memorising content to develop conceptual mastery, scientific reasoning and the precision required to perform confidently in examinations.

His approach is analytical and highly personalised, identifying gaps in understanding, refining exam technique and helping students recognise how marks are awarded. From targeted examination preparation to Internal Assessment and Extended Essay guidance, Andres provides structured academic support tailored to each student's needs and ambitions. His lessons integrate visual learning, real-world applications, data analysis and regular progress checks. Students develop a deeper understanding of challenging concepts while strengthening their independent problem-solving skills and ability to apply knowledge under examination conditions.

Specialisms: IB Chemistry HL & SL · Examiner-Informed Exam Preparation · Past Papers & Mark Schemes · Internal Assessment · Extended Essay · MYP Chemistry

Chemistry

• IB Diploma Programme Chemistry — Higher Level (HL)
• IB Diploma Programme Chemistry — Standard Level (SL)
• IB Middle Years Programme (MYP) Chemistry
• AP Chemistry

Specialist Academic Support

• Chemistry practical investigations and experimental design
• Laboratory reports and scientific writing
• IB Chemistry Internal Assessment (IA)
• Extended Essay (EE) guidance in Chemistry
• Scientific data handling, analysis and interpretation

As an IB Chemistry Examiner since 2016, Andres brings valuable assessment insight to his examination preparation. He helps students understand how marks are awarded, interpret question requirements accurately and produce clear, scientifically rigorous answers aligned with IB assessment criteria. Through targeted past-paper practice, mark-scheme analysis and individual feedback, students learn to identify lost marks, address recurring errors and refine their examination technique. Preparation is tailored to each student's syllabus coverage, current performance and examination goals, with emphasis on accuracy, efficiency and confident application of knowledge.

• 13+ years of teaching experience across international schools and higher education in LATAM, Saudi Arabia and the UAE.
• IB Chemistry Examiner since 2016, with examining experience in Chemistry Internal Assessment and specified examination components, as well as Extended Essay assessment.
• Former Head of Chemistry at an IB World School in Dubai, leading Chemistry curriculum development, assessment planning and departmental collaboration.
• IB DP Chemistry HL & SL specialist, experienced in preparing students for external assessments, practical investigations and scientific writing.
• Research-informed scientific background, combining Chemistry expertise with postgraduate study in environmental science and analytical chemistry.

Master of Science (MSc), Environmental Sciences — Jorge Tadeo Lozano University (2015). Thesis: Water Footprint Analysis of greenhouse and open-field tomato production systems in Colombia.

Specialization, Instrumental Analytical Chemistry — Pontifical Xavierian University (2011). Focus: spectroscopy, atomic absorption/emission, chromatography, EPR and related analytical techniques.

Bachelor of Science (BSc), Chemistry — Universidad Pedagogica Nacional (2009). Thesis: CTSA strategy for teaching to reduce consumption and groundwater pollution.