2 June - Year 10 Drama Excursion, CSDA Debating Round 6
3 June - Year 12 Japanese Continuers Excursion
6 June - Assembly - Guest Speaker Dianne McGrath
7 June - Year 11 "U Turn the Wheel" Incursion, MISA Debating, Elevate Young Leaders
8 June - College Athletics Carnival, Year 11 and 12 Music Excursion
9 June - Year 8 Reflection Day, Years 9,10,11 AIME Excursion, Year 12 Business Studies Excursion
9 - 11 June Year 12 AIS Excursion
12 JUNE - QUEEN'S BIRTHDAY - PUBLIC HOLIDAY
13 June - Senior School Assembly
14 June - Dio Football Knockout (Opens), Aboriginal Parent Forum
16 June - NSW CCC Cross Country, CSDA Debating Elimination 1
16 - 17 JUNE - COLLEGE MUSICAL AT ST GREGORY'S COLLEGE
19 June - Year 11, 2018 Information Night, Year 11 and Year 12 Vaccinations
21 June - Year 7 - 9 Cyberbullying Pastoral Incursion 
22 June - Dio CCC Basketball Playoffs
23 June - Year 10 Community Service Incursion, GDay, CSDA Debating Quarter Final
26 June - NAIDOC Assembly
28 June - NSW Oztag
29 June - HSC Dance Evening
30 June - Benedict Day, Mass, STAFF AND STUDENTS FINISH FOR TERM 2
17 July - Staff Return for Term 3
21 July - CSDA Debating Semi Final
24 July - STUDENTS RETURN FOR TERM 3, DIO Netball
25 July - College Assembly
26 July - Year 8 Italian Excursion, Year 11 SOR Excursion
27 July - MISA Debating
28 July - Mater Dei Feast Day, Year 11 Hospitality/Business Services Excursion