Labor says it will strike a new five-year funding agreement with the organisation behind Healthy Harold even though federal grants are guaranteed until 2022.

An injection of $2 million is set to keep Healthy Harold in good shape for years to come under a new federal Labor promise.

Life Education Australia and its giraffe mascot found themselves without federal government funding in the May 2017 budget before then-education minister Simon Birmingham intervened.

The department later struck a five-year funding arrangement, reportedly $200,000 a year until 2022.

Now Labor says it will bolster the yearly grants to $400,000 for five years if elected.

Opposition education spokeswoman Tayna Plibersek and health spokeswoman Catherine King are expected to make the announcement at a Queensland primary school on Wednesday.

More than 710,000 schoolkids benefit from the program across the country by learning about nutrition, physical activity, personal safety, cybersafety, safe and respectful relationships and the risks of drugs and alcohol.

LEA chief executive David Ballhausen said he was grateful for any funding that allows the non-profit organisation to ensure children have the knowledge and skills to make safe and healthy choices.

LEA and its state-based organisations received a total of $6.25 million in grants and $11.9 million in donations, school fees and other income in the financial year to June 2017.