My Lords, this is yet another example of the Government failing on education. As with RAAC, there was a delay in notifying school leaders; the error was identified in September, but heads were not notified until October. Can the Minister tell the House about how the error was identified, the timeline and decisions on the communication of this to schools and families? It is also clear that the Government know that the correction of the national funding formula will be tough for local authorities and frustrating for some school leaders. How will the department assist head teachers to deal with the additional stress and pressure this may cause, as the error will affect staffing decisions, judgments about school purchases and additional support available to pupils?