Here's the recent rankings by Quacquarelli Symonds (QS). QS is regarded as one of the three most influential and widely observed international university rankings.

http://www.telegraph.co.uk/education/universityeducation/10295999/Top-100-world-universities-201314-QS-rankings.html

If your LO is interested in studying abroad, would you consider it?

Top 35:
1 MASSACHUSETTS INSTITUTE OF TECHNOLOGY (MIT)
2 HARVARD UNIVERSITY
3 UNIVERSITY OF CAMBRIDGE
4 UCL (UNIVERSITY COLLEGE LONDON)
5 IMPERIAL COLLEGE LONDON
6 UNIVERSITY OF OXFORD
7 STANFORD UNIVERSITY
8 YALE UNIVERSITY
9 UNIVERSITY OF CHICAGO
10= CALIFORNIA INSTITUTE OF TECHNOLOGY (CALTECH)
10= PRINCETON UNIVERSITY
12 ETH ZURICH (SWISS FEDERAL INSTITUTE OF TECHNOLOGY)
13 UNIVERSITY OF PENNSYLVANIA
14 COLUMBIA UNIVERSITY
15 CORNELL UNIVERSITY
16 JOHNS HOPKINS UNIVERSITY
17= UNIVERSITY OF EDINBURGH
17= UNIVERSITY OF TORONTO
19= ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)
19= KING'S COLLEGE LONDON (KCL)
21 MCGILL UNIVERSITY
22 UNIVERSITY OF MICHIGAN
23 DUKE UNIVERSITY
24 NATIONAL UNIVERSITY OF SINGAPORE (NUS)
25 UNIVERSITY OF CALIFORNIA, BERKELEY (UCB)
26 UNIVERSITY OF HONG KONG (HKU)
27 AUSTRALIAN NATIONAL UNIVERSITY (ANU)
28 ECOLE NORMALE SUPÉRIEURE, PARIS (ENS PARIS)
29 NORTHWESTERN UNIVERSITY
30 UNIVERSITY OF BRISTOL
31 THE UNIVERSITY OF MELBOURNE
32 THE UNIVERSITY OF TOKYO
33 THE UNIVERSITY OF MANCHESTER
34 THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (HKUST)
35= KYOTO UNIVERSITY
35= SEOUL NATIONAL UNIVERSITY (SNU)