ISO INTERNATIONAL STANDARD 21248 First edition 2019-03 Information and documentation Quality assessment for national libraries Information et documentation - Evaluation de qualite pour les bibliotheques nationales Reference number IS0 21248:2019(E) ISO @ IS0 2019 IS0 21248:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 21248:2019(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Quality assessment in national libraries .17 4.1 Mission and functions of national libraries. .17 4.1.1 General. ..17 4.1.2 Mission statement for national libraries. ..18 4.1.3 Core functions of national libraries. ..18 4.1.4 Additionalfunctionsofnationallibraries .19 4.2 Target groups of national libraries 20 4.3 Quality criteria in national libraries. .21 4.3.1 Quality criteria that apply to all types of libraries 21 4.3.2 Specific quality criteria for national libraries 21 4.4 Methods for quality assessment in national libraries. 21 5 Performance indicators for national libraries .22 5.1 General 22 5.2 Use of performance indicators. 22 5.2.1 General 22 5.2.2 Selection of performance indicators .22 5.2.3 Limitations of performance measurement 23 5.3 Criteria for performance indicators 23 5.4 Descriptive framework 24 5.4.1 General 24 5.4.2 Name. 24 5.4.3 Background. 24 5.4.4 Objective of the performance indicator 24 5.4.5 Definition of the performance indicator 24 5.4.6 Method(s). 24 5.4.7 Interpretation and use of results 25 5.4.8 Source(s) .25 5.4.9 Examples and further reading (optional) 25 5.5 List of performance indicators for national libraries .25 6 Impact assessment in national libraries .27 6.1 Overview 27 6.2 Definition and description of library impact 27 6.2.1 General 27 6.2.2 Definition of library impact 27 6.2.3 Effects of library impact 27 6.2.4 Challenges in assessing impact 30 6.2.5 Use of impact assessment results 30 6.3 Methods for assessing impact of national libraries. 31 6.3.1 General. 31 6.3.2 Inferred evidence 31 6.3.3 Observed evidence ..33 6.3.4 Solicited evidence .34 6.3.5 Combined methods.. .36 6.4 Assessing the economic value of national libraries .37 6.4.1 General. .37 6.4.2 Calculating the value of library benefits to users .37 6.4.3 Economic impact analysis. ..40 IS0 2019 - All rights reserved iii